Inter-operatibility between View and DynRankView.

[kyungjoo-kim]

Now I mix a view with a dynrankview. Currently when I code

DynRankView a;
View b;
deep_copy(a, b);

this does not work. Can you provide assignment operator to chane one to another ?

DynRankView a;
View b;
DynRankView b_copy = b;
deep_copy(a, b_copy);

// or 

DynRankView a;
View b;
View a_copy = a;
deep_copy(a_copy, b);

// or 
deep_copy(a,b); 

Otherwise, I need to do

View b;
DynRankView<b::Layout,b::space> b_copy(a.data(), b.dimension(0), b.dimension(1));

This needs properties (like layout and space) and padding information. I don't think that the manual conversion is portable.

Any good idea ?

[crtrott]

Yeah these things are missing features. I'll mark it as feature request.

[ndellingwood]

The following interoperability features were added in #359
DynRankView redesigned to be its own View implementation
Added features:

Copy, Copy-assign View to DynRankView
deep_copy between Views and DynRankViews
subview function name now enabled (subdynrankview has same functionality)
Common method to request rank of a View and DynRankView: rank(user_view); This will eventually be replaced by a constexpr rank() in the View, but this will require coordination with packages and apps to avoid breaking their builds.

Important!
Before merging into Trilinos corresponding changes in Sacado must also be made as those in the attached patch file (as .txt)
sacado-mod-drvredesign-7.patch.txt
. Otherwise compatibility will break.